Home / 99,764.47-149,408.34-55,280.89

Finding the Fourth Proportional to 99,764.47, 149,408.34 and 55,280.89

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Solution

The fourth proportional to 99,764.47, 149,408.34 and 55,280.89 is: 82,789.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,764.47 : 149,408.34 = 55,280.89 : x
  2. Step 2: Convert to fraction form
    99,764.47/149,408.34 = 55,280.89/x
  3. Step 3: Cross multiply
    99,764.47x = 149,408.34 × 55,280.89
  4. Step 4: Simplify right side
    99,764.47x = 8,259,426,008.62
  5. Step 5: Solve for x
    x = 8,259,426,008.62/99,764.47
  6. Step 6: Final answer
    x = 82,789.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.